Searched hist:276665 (Results 1 - 2 of 2) sorted by relevance
| /freebsd-11-stable/share/man/man9/ | ||
| H A D | taskqueue.9 | diff 276665 Sun Jan 04 18:03:56 MST 2015 gibbs Prevent live-lock and access of destroyed data in taskqueue_drain_all(). Phabric: https://reviews.freebsd.org/D1247 Reviewed by: jhb, avg Sponsored by: Spectra Logic Corporation sys/kern_subr_taskqueue.c: Modify taskqueue_drain_all() processing to use a temporary "barrier task", rather than rely on a user task that may be destroyed during taskqueue_drain_all()'s execution. The barrier task is queued behind all previously queued tasks and then has its priority elevated so that future tasks cannot pass it in the queue. Use a similar barrier scheme to drain threads processing current tasks. This requires taskqueue_run_locked() to insert and remove the taskqueue_busy object for the running thread for every task processed. share/man/man9/taskqueue.9: Remove warning about live-lock issues with taskqueue_drain_all() and indicate that it does not wait for tasks queued after it begins processing. |
| /freebsd-11-stable/sys/kern/ | ||
| H A D | subr_taskqueue.c | diff 276665 Sun Jan 04 18:03:56 MST 2015 gibbs Prevent live-lock and access of destroyed data in taskqueue_drain_all(). Phabric: https://reviews.freebsd.org/D1247 Reviewed by: jhb, avg Sponsored by: Spectra Logic Corporation sys/kern_subr_taskqueue.c: Modify taskqueue_drain_all() processing to use a temporary "barrier task", rather than rely on a user task that may be destroyed during taskqueue_drain_all()'s execution. The barrier task is queued behind all previously queued tasks and then has its priority elevated so that future tasks cannot pass it in the queue. Use a similar barrier scheme to drain threads processing current tasks. This requires taskqueue_run_locked() to insert and remove the taskqueue_busy object for the running thread for every task processed. share/man/man9/taskqueue.9: Remove warning about live-lock issues with taskqueue_drain_all() and indicate that it does not wait for tasks queued after it begins processing. |
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